I've put a fix for this up on the trunk. I've run my unit tests on vc100 and gcc-4.5.3 cygwin. Could some of you with the other platforms give it a try?

Confirmed that existing tests fail with old code (including with VC8). Tested with new code and VC8,9,10 and Intel-11.1, 12.1 all OK. On Linux gcc-4.4, 4.6 intel-11.1, 12.1 and clang all OK. Sun on Linux still fails, but appears to be a lexical_cast issue and not your problem - will report that separately. HTH, John.